Answer:
Step-by-step explanation:
X=2.25
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4/9*x=1
x=9/4 The reciprocal of 4/9 is 9/4 and makes 1 whole.
**reciprocal is a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity
The answer to this question is 6720
12
divide 84 by 7.
Answer:24
Step-by-step explanation:Enlarges=multiply ,so multiply 8 and 3
X+y=30
X=30-y
Z=yx
Z=y(30-y)
D/dy
z=30–2y
At max 30–2y=0
2y=30 Y=15
Therefore x=15